Public Member Functions
def	__init__ (self, d, kwds)

def	__repr__ (self)

def	SVG (self, trans=None)

Public Attributes
	d

	trans

Detailed Description

Stores graphics primitive objects and applies a single coordinate
transformation to them. To compose coordinate systems, nest Fig
objects.

Fig(obj, obj, obj..., trans=function)

obj     optional list    a list of drawing primatives
trans   default=None     a coordinate transformation function

>>> fig = Fig(Line(0,0,1,1), Rect(0.2,0.2,0.8,0.8), trans="2*x, 2*y")
>>> print fig.SVG().xml()
<g>
    <path d='M0 0L2 2' />
    <path d='M0.4 0.4L1.6 0.4ZL1.6 1.6ZL0.4 1.6ZL0.4 0.4ZZ' />
</g>
>>> print Fig(fig, trans="x/2., y/2.").SVG().xml()
<g>
    <path d='M0 0L1 1' />
    <path d='M0.2 0.2L0.8 0.2ZL0.8 0.8ZL0.2 0.8ZL0.2 0.2ZZ' />
</g>

Definition at line 711 of file svgfig.py.

Constructor & Destructor Documentation

◆ init()

def svgfig.Fig.__init__	(	self,
		d,
		kwds
	)

Definition at line 742 of file svgfig.py.

   def __init__(self, *d, **kwds):
     self.d = list(d)
     defaults = {"trans":None}
     defaults.update(kwds)
     kwds = defaults
 
     self.trans = kwds["trans"]; del kwds["trans"]
     if len(kwds) != 0:
       raise TypeError("Fig() got unexpected keyword arguments %s" % kwds.keys())
 

Member Function Documentation

◆ repr()

def svgfig.Fig.__repr__ ( self )

Definition at line 734 of file svgfig.py.

Referenced by data_sources.json_file.__str__(), and datamodel.Object.__str__().

   def __repr__(self):
     if self.trans == None:
       return "<Fig (%d items)>" % len(self.d)
     elif isinstance(self.trans, str):
       return "<Fig (%d items) x,y -> %s>" % (len(self.d), self.trans)
     else:
       return "<Fig (%d items) %s>" % (len(self.d), self.trans.__name__)
 

◆ SVG()

def svgfig.Fig.SVG	(	self,
		trans = `None`
	)

Apply the transformation "trans" and return an SVG object.

Coordinate transformations in nested Figs will be composed.

Definition at line 752 of file svgfig.py.

References svgfig.Fig.d, svgfig.totrans(), and svgfig.Fig.trans.

   def SVG(self, trans=None):
     """Apply the transformation "trans" and return an SVG object.
 
     Coordinate transformations in nested Figs will be composed.
     """
 
     if trans == None: trans = self.trans
     if isinstance(trans, str): trans = totrans(trans)
 
     output = SVG("g")
     for s in self.d:
       if isinstance(s, SVG):
         output.append(s)
 
       elif isinstance(s, Fig):
         strans = s.trans
         if isinstance(strans, str): strans = totrans(strans)
 
         if trans == None: subtrans = strans
         elif strans == None: subtrans = trans
         else: subtrans = lambda x,y: trans(*strans(x, y))
 
         output.sub += s.SVG(subtrans).sub
 
       elif s == None: pass
 
       else:
         output.append(s.SVG(trans))
 
     return output
 